Nissan Versa (N17): P1148 closed loop control

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / P1148 closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause
P1148 CLOSED LOOP-B1 (Closed loop control function) The closed loop control function does not operate even when vehicle is being driven in the specified condition.
  • Harness or connectors (A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
  • A/F sensor 1 heater

Diagnosis Procedure

DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

Refer to EC, "DTC Index".

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

B terminal circuit
Description Terminal "B" is constantly supplied with battery power. Diagnosis Procedure Regarding Wiring Diagram information, refer to STR, "Wiring Diagram - With Intelligent Key System" or STR, "Wiring Diagram - Without Intelligent Key System". CAUTION: Perform diagnosis ...

Control cable
Exploded View 1. Bracket B 2. Lock plate 3. Transaxle assembly 4. Bracket A 5. Control cable 6. Shift selector assembly A: Manual lever B: Grommet Removal and Installation CAUTION: Always apply the parking brake before performing removal and installation. REMOVAL Remove the battery. R ...

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